Inwood Formation, Manitoba

For Inwood Formation, New York, see Tuckahoe marble.

The Inwood Formation is a geologic formation in Manitoba. The silty and salty dolomites preserve fossils dating back to the Telychian stage of the Silurian period.

Inwood Formation
Stratigraphic range: Telychian ~
Type	Formation
Unit of	Interlake Group
Lithology
Primary	Dolomite
Other	Halite, siltstone
Location
Coordinates	53.2°N 99.3°W / 53.2; -99.3
Approximate paleocoordinates	10.0°S 51.4°W / -10.0; -51.4
Region	Manitoba
Country	Canada
Inwood Formation, Manitoba (Canada) Inwood Formation, Manitoba (Manitoba)

Fossil content

The following fossils have been reported from the formation:

Trilobites

• ?Encrinurus tuberculifrons

Ostracods

• Leperditia hisingeri

Strophomenata

• Brachyprion cf. inflata
• Fardenia ellipsoides
• F. transversalis
• Fardenia cf. elegans

Rhynchonellata

• Camarotoechia indianensis
• Hyattidina junea

Gastropods

• Coelocaulus sp.
• Gastropoda indet.

Cephalopods

• Lowoceras imbricatum
• Mandaloceras parvulum

Stromatoporoidea

• Clathrodictyon drummondense
• Clathrodictyon cf. striatellum

Corals

• Amplexoides severnensis
• Asthenophyllum inwoodense
• Favosites cf. niagarensis
• Halysites catenularia
• Neozaphrentis tyrrelli
• Paleofavosites poulseni
• P. transiens

See also

• List of fossiliferous stratigraphic units in Manitoba

References

Bibliography

• Stearn, C. W (1956), "Stratigraphy and palaeontology of the Interlake Group and Stonewall Formation of Southern Manitoba", Geological Survey of Canada Memoir, 281: 1–16